What Is Dual Authorization in Payments?

Dual Authorization

By VerifyTheCall Research · Published July 31, 2026 · 3 min read

Dual authorization (also called the four-eyes principle) is a payment control requiring two independent people to approve a transaction before it is released — typically applied above a defined amount threshold. It prevents any single compromised, deceived, or dishonest individual from moving funds alone.

How it works

An initiator creates the payment; a separate approver (or two) must sign off before release.
Thresholds scale the requirement: e.g. one approver to $10k, two above $50k.
Approvers must be genuinely independent — different people, different sessions, ideally different devices.

The sub-threshold gap

Dual authorization is necessary but famously insufficient: attackers who research a target size their request below the threshold, where a single deceived employee suffices. A cloned CFO voice asking for $38,000 against a $50,000 limit meets the policy perfectly. Sub-threshold fraud typically surfaces only at reconciliation — quarters later. The fix is a verification layer with no amount floor: callback verification on all externally-triggered payment requests, regardless of size. See wire fraud prevention and payment approval process design.

Frequently asked questions

Is dual authorization the same as the four-eyes principle?

Yes — both describe requiring two independent people to approve an action before it takes effect.

What threshold should trigger dual authorization?

Common practice sets it between $10,000 and $50,000, but the number matters less than pairing it with verification controls that apply below the threshold too.

Why doesn't dual authorization stop CEO fraud?

Because attackers size requests below the threshold, where one signature suffices — and a convincing cloned voice only needs to deceive that one person.

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